Adjustable grommet and a grommet insert



FIG. 1 is a front view of the adjustable grommet, the undisclosed opposite side being identical;

FIG. 2 is a side view thereof, the undisclosed opposite side being identical;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a reduced front view thereof, attached to the frame of an unclaimed racquet that is shown for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an adjustable grommet and a grommet insert, as shown and described. 